Home / 138,038.15-207,061.83-38,189.98

Finding the Fourth Proportional to 138,038.15, 207,061.83 and 38,189.98

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Solution

The fourth proportional to 138,038.15, 207,061.83 and 38,189.98 is: 57,286.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,038.15 : 207,061.83 = 38,189.98 : x
  2. Step 2: Convert to fraction form
    138,038.15/207,061.83 = 38,189.98/x
  3. Step 3: Cross multiply
    138,038.15x = 207,061.83 × 38,189.98
  4. Step 4: Simplify right side
    138,038.15x = 7,907,686,955.51
  5. Step 5: Solve for x
    x = 7,907,686,955.51/138,038.15
  6. Step 6: Final answer
    x = 57,286.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.